JPS62128059A - Recorder - Google Patents

Abstract

PURPOSE:To again set a recording head even if a power supply trouble occurs after reset of a mechanical storage means, by supplying power to an electric storage means from an auxiliary power supply circuit. CONSTITUTION:If a cassette loading/unloading detection switch 70 is turned on by replacement (loading/unloading) of a cassette, presence or absence of recording on a disk is retrieved to store a recordable position in a latch circuit 100, and the mechanical storage means is reset. In this case, the latch circuit 100 is fed by a backup power supply circuit 93' even after a power supply circuit 93 is turned off. Thus, the problem that a head 5 cannot be set again by a power supply trouble when the mechanical storage means is reset before retrieval of the recordable position is solved well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and particularly to a recording device in which a record carrier can be exchanged.

[Conventional technology]

For example, a rotary record carrier such as a magnetic disk or a magnetic drum is used, and concentric or annular recording tracks are formed by a movable head, and each track records information of a unit length (for example, 1 field or 1 frame). In a recording device that records video signals, etc., if you want to record information while preventing double recording, it is necessary to correctly position the head on the unrecorded part of the record carrier before recording. becomes.

Conventionally, prior to recording, the presence or absence of recording at the recording position on the record carrier is detected, and if there is recording, the head is moved to the next recording position, and the operation is repeated. There is already known an apparatus in which the head is positioned in an unrecorded area on the record carrier, and recording is only possible in this state. (For example, this is disclosed in Japanese Unexamined Patent Publication No. 54-140515 filed by the present applicant.) In an apparatus configured in this way, for example, when recording at one recording position ends, Alternatively, by creating a control sequence in which the head is moved to the next recording position during the next recording operation, the current position of the head on the record carrier itself can be changed to the position for the next recording on that record carrier. It serves as a memory of position,
Therefore, even if the power is turned off, or in the case of a portable device, the power battery is removed for replacement or charging, or the battery voltage drops below the threshold and becomes unusable, When the power is turned on or restored, double recording is performed on the record carrier used for the previous recording based on the current head position unless the head is moved in the meantime. Furthermore, it is possible to continue recording without creating unnecessary unrecorded portions (empty tracks).

However, if the record carrier is replaced while the power is cut off in some way as mentioned above, the current head position becomes completely meaningless, and therefore, if recording continues double recording,
Alternatively, an empty track may be created.

In order to deal with such -1 situation, as mentioned earlier,
This means that the operation of positioning the head to the unrecorded area on the record carrier must be performed every time the power is turned on, but this is unreasonable since the fact that the record carrier has been replaced cannot be confirmed. In addition, the device's instant recording ability (that is, the so-called quick-shooting ability of a camera) will be impaired in all cases, and furthermore, especially in the case of a portable type device, the power supply battery will be consumed. This will also speed up the process.

In addition to the above, problems similar to those described above may occur in devices designed to set various conditions for recording, such as switching the head to be used depending on the characteristics or type of the record carrier. This is a matter of concern.

In this regard, the present applicant has developed a recording device in which the record carrier can be replaced, by providing a means for mechanically storing that the record carrier has been taken out or newly loaded. An attempt to solve the above-mentioned problems was previously proposed in Japanese Patent Application No. 60-22633.

That is, when the record carrier is exchanged, it is mechanically memorized by the above-mentioned storage means, and when the next recording is performed, the record carrier is changed based on the memory contents of this mechanical storage means. After confirming whether or not there has been a replacement, it is possible to reset the head to the above-mentioned unrecorded portion only if there has been replacement.

[Problem that the invention seeks to solve]

The present invention briefly relates to a further improvement of the earlier proposal made by the applicant mentioned above.

That is, if the above-mentioned mechanical storage means remembers that the record carrier has been replaced, it is necessary to reset it when resetting the above-mentioned head to the unrecorded part. However, in this case, if this mechanical storage means is reset before the recordable position on the record carrier is known, power supply problems (battery failure) may occur after the reset until the recordable position is known. In the event of wear, replacement, or temporary interruption of the power supply due to erroneous operation, it becomes impossible to properly reset the head.

Accordingly, the present invention is a recording device in which the record carrier can be replaced, and even if the record carrier is replaced while the power is cut off, it is possible to reliably detect this and take appropriate measures. Moreover, the present invention aims to provide a highly safe recording device that is as fail-safe as possible against power supply troubles when resetting the recording means.

[Means for solving problems]

Accordingly, the present invention provides a recording device in which record carriers can be exchanged, and includes a search means for searching for the presence or absence of recording at each recording position on a loaded record carrier, and electrically processing the search results. an electrical storage means powered by an auxiliary power supply circuit for storing and a mechanical storage means for mechanically storing that the record carrier has been removed or newly loaded;
a unique means, a control means for controlling the retrieval means according to a storage state of the mechanical storage means, and a reset means for resetting the mechanical storage means after the storage by the electrical storage means is completed. It is equipped with the following.

[Effect]

In the above, the control means operates the retrieval means when the mechanical storage means stores that the record carrier has been exchanged; Remember search results. After this storage is completed, the reset means resets the mechanical storage means. On the other hand, the electrical storage means is supplied with power from an auxiliary power supply circuit, and therefore, even if a power supply problem occurs after resetting the mechanical storage means, the recording head cannot be reset due to the contents stored in the electrical storage means. It can be done based on.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First, a record carrier used in an embodiment of the present invention will be explained with reference to FIG.

In FIG. 1, l indicates a cassette as a record carrier holder, and a flexible rotating magnetic disk 2 as a record carrier is housed inside the cassette. A center core 3 is provided at the center of the magnetic disk 2 as a mounting portion made of synthetic resin, etc., and a magnetic plate 3d (shown in 3B and 3C) is fixed to the lower surface of the center core 3. Moreover, a magnetic bottle 3e for indicating the rotational phase is implanted in this magnetic plate 3d so as to penetrate through the center core 3.

The cassette l is provided with upper and lower openings 1a and 1b into which stabilizers 37 and 15 (FIG. i2) for stabilizing the rotation of the magnetic disk 2 can enter, respectively. Then, the recording magnetic head 5 comes into contact with or closely opposes the recording surface of the magnetic disk 2 through the lower surface side opening 1b.

The center core 3 is attached to the magnetic disk rotation drive spindle 6 on the loading side, and has an engagement hole 3C for this purpose, and the engagement hole 3C has two slope parts 3b and a spring part 3a.
The spring part 3 is formed with respect to the spindle 6.
It is attached so that the slope portion 3b of the center core 3 is in contact with the center core 3 by a. In addition, a permanent magnet 7 is provided on the flange portion 6a of the spindle 6 in contrast to a magnetic plate 3d provided on the lower surface of the center core 3, and when the center core 3 is attached to the spindle 6, the magnetic plate 3d is attracted by the permanent magnet 7 on the spindle 6 side, so-called magnetic chucking is performed, and at this time, the lower surface of the center core 3 comes into contact with the flange surface 6b of the flange portion 6a of the spindle 6, so that the magnetic disk 2 The height relative to the head 5 is defined.

Note that lc and 1d are openings on the upper and lower surfaces of the cassette l corresponding to the center core 3.

Next, an embodiment of the present invention using the magnetic disk cassette described above will be described below.

First, referring to FIG. 2, reference numeral 11 indicates a main body chassis of the recording apparatus, and the above-mentioned spindle 6 and head 5 are rotatably and movably provided on the main body chassis 11. ing. Further, the main body chassis 11 is provided with a hinge shaft 12 . 16 is a side plate provided on the main body chassis 11, and the side plate 16 includes a shaft 17.
A tensioning lever 18 is rotatably provided on the shaft 17 and is biased clockwise by a spring 19. Furthermore, a pair of bins 20 are set up on the same side plate 16, and two locks 21 and 23, which are slidable while being guided by the bins 20, are biased to the left in the figure by springs 22 and 24, respectively. It is provided. The spring hooks for the 41.42 springs 22.24 are pins planted in the side plate 16.

Reference numeral 31 designates a cassette holder as a cassette receiving member, and the holder 31 is rotatably attached to the main body chassis 11 around the aforementioned hinge shaft 12 through its hinge portion 31e. The holder 31 has an opening 31f at one end for receiving the aforementioned cassette 1, and the cassette 1 is inserted through the opening 31f. Opening 31a provided in holder 31
and 31b are for allowing entry of stabilizing plates 37 and 15, which will be described later, respectively, and openings 31c and 31d
are for allowing the protrusion 38a to enter the spindle 6 and a center core pressing leaf spring 38, which will be described later.

The opening 31g provided on the lower surface side is for allowing the entry of a cassette sensing piece 66a of a cassette loading/unloading detection lever 66 (FIG. 5), which will be described later, and is provided so as to protrude through the hole 11b of the main body chassis 11. It is something.

35 is an outer housing member, that is, an outer cover, and the outer cover 3
5 is rotatably attached to the main body chassis 11 by its hinge portion 35a about the aforementioned hinge shaft 12. Lock pins 36a and 36b are implanted on the tip side surface 35c of the external force /< -35, and
A hook member 40 for the holder 31 is provided. Reference numeral 37 denotes an upper stabilizing plate attached to the ceiling of the outer cover 35, which, together with the lower stabilizing plate 15 provided on the main body chassis 11 side, sandwiches the magnetic disk 2 from above and below to prevent vibrations when the magnetic disk 2 rotates. and prevent deformation. In this case, the positions of each stabilizer plate 37.15 and the magnetic disk 2 are set so that an appropriate air layer is formed between them. Note that the head 5 protrudes through an opening 15a provided at the center of the lower stabilizing plate 15.

Reference numeral 38 denotes a T-shaped leaf spring, which is an example of a center core suppressing means, whose tail end 38b is fixed to the ceiling of the outer cover 35 by means such as screws, and a portion 38a of its tip is fixed downward as shown in the figure. The ears 38c on both sides are formed so as to protrude from the
are respectively fixed to the ceiling of the outer cover 35 by the position regulating member 39, and are therefore locked against the elasticity of the leaf spring 38, so that the protruding portion 38a moves toward the spindle 6 while an initial force is applied thereto. It is arranged so that it is at the top of the screen.

The spring 13 disposed on the hinge shaft 12 has its arms applied to the halter 31 and the outer cover 35, respectively.
A rotational force in the opening direction is applied between the two. Further, the spring 14 applies a counterclockwise rotational force to the outer cover 35 by having one arm of the spring 14 pressed against the main body chassis tt and the other arm of the spring 14 against the outer cover 35.

74 is provided on the main body chassis 11 and is connected to the lock lever 2.
The contact piece 74a is pressed by the switch control arm 23d of No. 3, and the contact piece 74a is in the state shown in FIG. 3C and FIG.
and 74b are in contact with each other.
This is a lock completion detection switch.

Here, with reference to FIG. 5, the structure of the storage means in this embodiment for mechanically storing the conversion (loading/detaching) of the cassette 1 will be explained.

In the figure, 61 is a lever pivot member fixed to the back surface of the top plate of the main body chassis ti, and 62 is a shaft portion 6 of the pivot member 61.
The switch operating lever 1a is rotatably and movably supported, and has a switch operating portion 62a at its tip that is bent so as to be located above the contact piece 70a of the switch 70 in a neutral state. 63 A spring for biasing the ladder 62 in the counterclockwise direction in the figure and maintaining it in a neutral state.It is wound around the shaft 61a of the pivot member 61, and both ends of the spring 63 are connected to the rail 62 and the fixed spring. They are hung on pins 65, respectively. The pin 65 is arranged to receive the tail end 62b of the lever 62 so that its counterclockwise rotation can be restricted at a position where the switch operating portion 62a is just above the contact piece 70a of the switch 70.

Reference numeral 64 denotes a member that prevents the spring 63 and the lever 61 from being removed.

Reference numeral 66 denotes a substantially L-shaped cassette loading/unloading detection lever with a cassette sensing piece 66a at its tip, which is rotatably supported by a shaft 67, and is rotated counterclockwise in the figure by a spring 68, i.e. The cassette sensing piece 66a is biased to protrude toward the holder 31 through the hole 11b (on the top plate) of the main body chassis 11, and further receives the arm 62c of the switch operating lever 62 against the spring 63. A falling portion 66b of the switch 69, a push-down portion 66c for pushing down the arm portion 62c, and a switch operation portion 66d for pushing down the contact piece 69a of the switch 69.

Reference numeral 69 denotes a normally open type cassette presence/absence detection switch, and when the cassette 1 is not loaded, the cassette loading/unloading detection lever 66 is rotated counterclockwise by the spring 68, so that the switch operation portion 66d is turned on and off. Piece 69a
is turned off by being pushed down and dissociated from the contact piece 69b, and when the cassette 1 is loaded, the lever 66 disengages from the sensing piece 66 as shown in FIGS. 3B and 3C.
The contact pieces 69a and 69b are pushed by the lower surface of the cassette l and rotated clockwise, so that the contact pieces 69a and 69b have their own sliding properties.
are arranged so that they are turned on when they come in contact with each other.

70 is a switch operation part 62a of the switch operation lever 62
This is a normally open type cassette loading/unloading detection switch which is turned on when the contact piece 70a is pressed down and comes into contact with the contact piece 70b.

A gear 71 is rotatably supported by a shaft 72, and is rotated in conjunction with the movement of the head 5 by a head moving mechanism to be described later. 73 is a reset integrated with gear 71.
When the head 5 is moved by the head moving mechanism to a predetermined position outside a predetermined recording area on the magnetic disk 2, the tail end 62b of the switch operating lever 62 is pressed by the rising portion 73a of the head 5. The arm portion 62c is rotated clockwise against the spring 63.
This is for separating the cassette from the pressing portion 66c of the cassette loading/unloading detection lever 66.

Now, in the above configuration, first, in order to load the cassette L, the outer cover 35 is attached to the main body chassis 1 as shown in FIG. 3A.
1, it is rotated counterclockwise about the hinge shaft 12 by the biasing force of the spring 14 to open it, and its one end 35b abuts against the main body chassis wall 11a and is stopped. In this case, the holder 31 attempts to rotate clockwise relative to the outer cover 35 due to the biasing force of the spring 13;
A third hook member 40 provided on the outer cover 35
It will be restricted to the position shown in figure A.

Here, when the outer cover 35 and the holder 31 are opened as shown in FIG. 3A, the tension lever 1 is opened as shown in FIG. 4A.
8 hook portion 18b and lock lever 21 claw portion 21d
are in an engaged state. Also, lock fist lever 2
The bent portion 21c of the lock lever 23 is in contact with the one end 23c of the lock lever 23, so that the double-ended lock levers 21.23 are respectively locked in positions shifted to the right against the springs 22.24. It becomes. Also, both lock Φ levers 21
．． Claw parts 21a and 23a provided in 23 and 2
1b and 23b are located outside the locus of movement of the lock pins 36a and 36b implanted in the outer cover 35. In this state, the contact piece 7 of the aforementioned lock completion detection switch 74
4a and 74b are in a non-contact state.

In addition, in this state, as shown in FIG. 5, the cassette loading/unloading detection lever 66 is rotated counterclockwise by the spring 68, so the switch operation lever 62 is moved by the falling portion 66b of the detection lever 66. Unregulated spring 63
The switch operating portion 62a is positioned directly above the contact piece 70a of the cassette loading/unloading detection switch 70. is in a state of Further, the cassette presence/absence detection switch 69 is connected to the switch operating portion 66 of the detection lever 66.
d pushes down the contact piece 69a and the contact pieces 69a and 69b are in a non-contact state.

Returning again to FIG. 3A, insert the cassette l from the opening 31f of the holder 31 in the state shown, and rotate the outer cover 35 clockwise about the hinge shaft 12 against the biasing force of the spring 14. Then, the holder 31 also rotates in the same direction about the hinge shaft 12, and at the position corresponding to the cassette loading and disk loading completion position shown in FIG. The lower stabilizing plate 15 and the upper stabilizing plate 37 also enter the opening 3 of the holder 31, respectively.
openings 1b and l of cassette l through 1b and 31a
Enter a. At this time, the outer cover 35 is
As shown in Figure B, when pushed further in the direction of the arrow than the position corresponding to the cassette loading and disk loading completion position shown in Figure 3C, the tip of the leaf spring 38 provided at this time is pushed out by an external force of <-35. The magnetic disk 2 is
The center m-core 3 is urged toward the spindle 6, and its lower surface comes into contact with the flange surface 6b of the flange portion 6a of the spindle 6. Incidentally, at this time, the slight difference between the pushing stroke of the outer cover 35 and the required pushing amount of the center core 3 is absorbed as the deflection of the leaf spring 38.

Here, when the cassette 1 is inserted into the halter 31, in the state shown in FIGS. 3B and 3C, the insertion and removal of the cassette shown in FIG. The pushing part 66c is rotated clockwise against the spring 68 in order to be pushed by the
The arm 66c of the switch operation lever 62 is pushed down. As a result, the operating lever 62 is connected to its switch operating section 62.
At step a, the contact piece 70a of the cassette loading/unloading detection switch 70 is pressed down and brought into contact with the contact piece 70b to turn it on. Also, at this time, the cassette presence/absence detection switch 69 detects the presence/absence of the cassette.
Since the contact piece 69a is released from being pressed down by the switch operating portion 66d of 66, it is turned on by its own layer property.

Of course, if the cassette 1 is not inserted into the holder 31, the detection lever 66 will not be rotated clockwise, and therefore the switches 69 and 70 will both remain off.

As can be understood from the above, on the wood flow side, the arm from the switch operation lever 62 is connected to the cassette loading/unloading detection lever 6.
The fact that the cassette l has been taken out is memorized by being switched to the position where the cassette l is rotated until it enters the lower side of the pressing part 66c of the holder 31, and this memorization signal is then transmitted to the state that the cassette l is loaded in the holder 31. When this is pushed down together with the outer cover 35 and set to the state shown in FIGS. 3B and 3C, the cassette loading/unloading detection switch 70 is turned on.

Now, as shown in FIG. 3B, when the outer cover 35 is pushed in, the lock pins 36a and 36 implanted in the outer cover 35
b, the pin 36b pushes down the tail end 18a of the tension lever 18 and rotates the same / The lock lever 21 is disengaged from the claw portion 21d. Due to this disengagement, the lock lever 21 moves to the left under the force of the spring 22 as shown in FIG. 4B, and at this time, the lock pin 36a , 36b are provided with their claw portions 21a, respectively.

21b will be located. At this time, the side end of the lock lever 23's claw portion 23a or 23b is locked.
By abutting the pin 36a or 36b from the side, the spring 24 is forced to move to the left, and the lock lever 21 is held against the movement of the lock lever 21. Then, when the outer cover 35 is released, the outer cover 35 attempts to rotate counterclockwise around the hinge shaft 12 due to the biasing force of the spring 14, but at this time, the lock pin 3
6a, 36b and the claws 21a, 21 of the lock lever 21
b are engaged with each other, and their rotation is prohibited. At this time, the lock lever 23 moves to the left under the force of the spring 24 until it is regulated by the bent portion 21c of the lock lever 21, and the claws 23a, 23b and the lock lever 23 move to the left.
36a and 36b are engaged as shown in FIG. 4C. That is, at this point, the outer cover 35 is fixed to the main body chassis 11. In this state, the switch control arm 23d of the lock ψ lever 23 brings the contact piece 74a of the lock completion detection switch 74 into contact with the contact piece 74b, turning it on.

Further, the tip protrusion 38a of the leaf spring 38 provided on the outer cover 35 breaks contact with the center core 3, as shown in FIG. 3C, and the magnetic disk 2 is properly mounted on the spindle 6. So, in this state, spindle 6
It becomes possible to rotate by the rotation of .

Incidentally, in order to take out the cassette l, the lock a lever 21 (7) protruding from the slot-shaped opening 16 of the side plate 16 is used.
In FIG. 40, bend the bent portion 21e against the springs 22 and 24.
The lock lever 21 is locked by the tension lever 18 as shown in FIG.
2 opens, and the outer cover 35 and holder 31 close to the spring 1.
There is no need for detailed explanation of the state shown in FIG. 3A due to the action of 3.14.

In addition, in 3A, 3B, and 30, 43 is the holder 3.
For example, when the outer cover 35 is closed, the cassette 1 is placed on the ceiling of the outer cover with respect to the positioning member 43. It is also possible to provide a leaf spring 44 or the like that presses the cassette 1 toward the holder 31 to ensure reliable positioning of the cassette 1 with respect to the holder 31.

Here, as a modification of the cassette loading and disk loading mechanism described above, for example, the holder 31 is omitted, and instead, the cassette L is shaped in the space sandwiched between the hinge shaft 12 and the side plate 16 of the main body chassis 11. The fixed cassette receiver forms a receptacle with a frame shaped according to the
This receiver may be configured to accommodate the cassette (1) by throwing it into the receptacle.In that case, the outer cover 35 may have an elastic member such as a leaf spring, sponge, or soft rubber on its ceiling. , it is possible to provide the cassette l so as to act to press the cassette l against the main body chassis 11 in the locked state of the outer cover 35 shown in FIG. It is something to do. Further, in this case, it is possible to add a means for ejecting the cassette 1 from the receiving portion of the main body chassis 11, such as one that can be operated manually or that is linked to the opening operation of the outer cover 35. It is something.

Also, as a modification of the storage means shown in FIG.

For example, only the switches 69 and 70 and the gear 71 are arranged on the main body chassis II side, and the operating lever 62 and the detection lever 66 are arranged on the back side of the holder 31 as shown in FIG. 66a into the holder 31 through the opening 31g of the holder 31,
Then, the holder 31 and the outer cover 35 are
When set to the state shown in Figure C, the levers 66 and 62 can act on the switches 69 and 70, respectively, and
It is also possible to configure the reset lever 73 so that it can act on the lever 62.

Next, the magnetic head moving mechanism will be explained with reference to FIG.

In the figure, reference numeral 5 denotes the aforementioned magnetic head, which is fixed to the head carrier 46 via the head mounting board 9 in its hole 46c. The head carrier 46 is supported by a guide rail 47 via a sliding pole 48, and is movable along the guide rail 47. The pole 48 is recessed into V-shaped grooves 46e and 47a at each side end of the head carrier 46 and guide rail 47. 4
6d is the head carrier 46 to escape the spindle 6.
It is a long hole formed in. An engaging portion 46b for the head moving screw 54 is provided at the tip of the arm portion 46a of the head number carrier 46. The arm portion 46a
A pack lash removal spring 56 is hung between the fixed pin 57 and the carrier 46 in the direction of the arrow X in the figure.

It is urged downward, and the engagement backlash between the engagement portion 46b and the screw 54 is eliminated.

The screw 54 is attached to the center of the shirt 51,
The shaft 51 is rotatably supported by a bearing 52, and a worm wheel 53 and a worm gear 55 are attached to both ends thereof. Warm
The wheel 53 meshes with a worm fist gear 50 attached to the output shaft 49a of the head moving step Φ motor 49, and the worm fist gear 55 is connected to the gear 71 in FIG.
It meshes with the

Therefore, when the step motor 49 rotates, the rotation is transmitted to the shaft 51 through the meshing of the worm gear 50 and the worm wheel 53 to the screw 54.
is rotated, and therefore, the carrier 46 is rotated through the engagement of the retaining portion 46b with the screw 54.
The direction of movement in this case is determined by the direction of rotation of the motor 49, and the amount of movement corresponding to a unit track pitch on the disk 2 is determined by the rotation of the motor 49. It can be controlled by the number of steps. Of course, in this case, the gear 71 is rotationally driven through the worm gear 55.

Incidentally, 58 and 59 are detectors for detecting that the head 5 leaves a predetermined recording area on the disk 2 at the outer circumference side and the center side of the disk 2, respectively, and the light emitting element 58
It has a well-known photocoupler configuration including light receiving elements 58b and 59b, and is arranged so as to detect light shielding plates 46f and 46g attached to the carrier 46.

In the following explanation, it is assumed that 50 recording tracks can be set in the above-mentioned predetermined recording area on the disk 2 with a predetermined track pitch, for example (100gm), and from the outer circumferential side to the center side of the disk l. A number from 1 to 50 shall be assigned to each track. In this case, the detector 58 detects the point at which the head 5 is moved further l track pitch from the first track position to the outer circumferential side of the disk (hereinafter referred to as
For convenience, the position of the head 5 at this time will be referred to as the O-th track position).
9, at the point when the head 5 has been moved one track pitch further toward the center of the disk from the 50th track position (hereinafter, for convenience, the position of the head 5 at this time will be referred to as the 51st track position), the light shielding plate They are arranged so as to detect 46g.

Further, the gear 71 moves counterclockwise (clockwise in FIG. 5) in response to the movement of the carrier 46 in the direction of arrow X in the figure.
It is assumed that it is rotated clockwise (counterclockwise in Fig. 5) in response to movement in the opposite direction to the arrow.
For example, the reset lever 73 is operated by pressing the tail end 62b of the switch operating lever 62 at its rising portion 73a when the head 50 is moved from the 0 track position to the outer circumferential side of the disk by several track pitches. Shihachi-6
It is assumed that the setting is such that the engagement between the arm portion 62c of No. 2 and the pressing portion 66c of the detection lever 66 is released. It is also assumed that the gear and rear 46 are moved in the direction of arrow X by forward rotation of the step motor 49, and in the opposite direction by reverse rotation.

Next, the electric circuit system of the recording apparatus having the above mechanical configuration will be explained with reference to FIG.

Note that this figure shows an example of a circuit system when the present invention is applied to a still video recording device.

In the figure, 81 is a camera unit having a well-known configuration for forming a video signal, 82 is a recording circuit for recording the video signal output from the camera unit 81 onto the disk 2 through the head 5, and 83 is a recording circuit for recording the video signal output from the camera unit 81 onto the disk 2. A recording control circuit for controlling the recording circuit 82 to record one field or one frame worth of video signals, and 84 a periodic signal generation circuit for generating horizontal and vertical periodic signals HS and vS. , its output is applied to a camera section 81, a recording circuit 82, a recording control circuit 83, and a disk motor control circuit 89, which will be described later. Note that the recording control circuit 83 outputs a recording end signal RE upon completion of recording by the head 5.

Reference numeral 85 indicates a recording presence/absence detection circuit constituting a search means for detecting the presence/absence of recording at each recording position on the disk 2, that is, the presence or absence of a video signal through the head 5;
This is a changeover switch for switching between the output of the recording circuit 82 (terminal R side) and the input of the detection circuit 85 (terminal C side).

87 is a step motor drive circuit for driving the head moving step motor 49 (FIG. 6), and 88 is a disk rotation motor for rotating the disk 2 through the spindle 6.

Reference numeral 89 denotes a disk motor control circuit that controls the motor 88, and here it outputs a reference speed signal from an internal reference oscillator, a rotational speed signal FC from the motor 88, and a vertical periodic signal vS from the periodic signal generation circuit 84. Furthermore, a magnetic pin 3e buried in the center core 3 of the disk 2
Based on the disk rotation transfer signal PG from the disk rotation phase detector 90 that detects the
．． 80 oram) and at a predetermined phase with respect to the timing of the vertical periodic signal vS.
Control 8. The control circuit 89 turns the servo to 0 when the motor 88 starts rotating at a specified speed and a specified phase.
Outputs lock-in signal SL.

Reference numerals 91 denote a recording trigger switch 95 and a mode changeover switch 97, which will be described later. The aforementioned cassette presence/absence detection switch 69.
Cassette loading/unloading detection switch 70, outer cover lock completion detection switch 74, carrier position detectors 58 and 59,
This controller is a system that controls the entire circuit system shown in FIG. 7 based on a recording end signal RE from the recording control circuit 83, a servo lock signal SL from the motor control circuit 89, and a power-on signal PO obtained when the power is turned on. .

92 is a display device that emits light or includes a light emitting element, 93 is a power supply circuit that includes a battery, 93' is a backup (auxiliary) power supply circuit that includes a capacitor, 94 is a power switch, 95 is a recording trigger exposure switch, and 96 is a trigger button. , here, by pressing down to the first step, the power switch 94 is turned on.
The recording trigger and the switch 95 are respectively turned on by pressing down to the second level. 9
7 is a single shooting mode (a mode in which one field or one frame is recorded for each operation of the trigger switch 95) and a quick shooting mode (a mode in which recording is repeated at a predetermined speed as long as the trigger switch 95 is turned on). This is a mode changeover switch for switching between the two modes.When it is off, it is set to single-shot mode, and when it is on, it is set to quick-shot mode.

It goes without saying that only the trigger switch 95 may be operated by the trigger button 96, and the power switch 94 may be operated by another member.

Further, the recording presence/absence detection circuit 85 is configured to detect the presence or absence of an RF (radio frequency) signal when the recording signal is an FM signal, for example, and outputs a high signal when there is recording.

Further, when the power switch 94 is turned on, the backup power supply circuit 93' is supplied with power from the power supply circuit 93, thereby charging the capacitor with power, and in response to the switch 94 being turned off, the backup power supply circuit 93' supplies this charged power to a required circuit (for example, at least It supplies the controller 91 and the latch circuit 100 (to be described later), and has a capacity of several tens of minutes to several hours.

99 is a counter that counts the drive pulses from the step motor drive circuit 87, and the step motor 49 is rotated in the normal rotation direction (carrier (
46) is counted up by driving in the X direction of the carrier 46), and counted down by driving in the reverse direction (the direction opposite to the X direction of the carrier 46), and is cleared by turning off the carrier position detector 58. When the circuit 59 is turned off, the output of the preset data generation circuit 98 ("51'")
is preset.

A latch circuit 100 latches the contents of the counter 99 in response to a load command from the controller 91, and constitutes a means for electrically storing the search result of recording/non-recording, and is also supplied with power from the backup power supply circuit 93'. It looks like this. A comparison circuit 101 compares the content A of the latch 100 and the content B of the counter 99, and its A=B output (A=B high) is given to the controller 91.

The system Φ controller 91 includes a microcomputer etc. as a main component and is also supplied with power from a backup power supply circuit 93'. explain.

In the above configuration, first, the preparation operation for recording when the power switch 94 is turned on by pressing down the first stage self-speed of the trigger button 96 will be explained with reference to FIG. .

Once the power is turned on (step 5ol), the system
The controller 91 checks whether the outer cover lock completion detection switch 74 is turned on or not (step 502). If it is not turned on, the controller 91 waits until it is turned on. On the other hand, if it is on, the controller 91 then checks whether the cassette loading/unloading detection switch 70 is on or not (Step 5O3) If it is on, the cassette 1 is being replaced (loading/unloading). Therefore, an automatic positioning operation of the head 5 to an unrecorded position on the disk 2, which will be described below, is performed.

That is, first, in order to prevent the recording surface of the disk 2 from being damaged due to the movement of the head 5 while the disk 2 is stopped, the controller 91 instructs the disk motor control circuit 89 to operate the motor 88. This command causes the motor 88 to rotate (step 504), and then in step ◆, the motor drive circuit 87 is instructed to continuously rotate the step motor 49 in the normal direction. (step 505). This allows the head 5 to be continuously moved toward the center of the disk 2, that is, in the direction of the arrow X in FIG. During this time, the controller 91 turns off the carrier position detector 59 in FIG.
It is necessary to repeatedly check whether the light-receiving element 59b is turned off (Step 506), and when it is turned off,
Once, the motor 49 is commanded to stop (step 507).
.

Here, when the carrier position detector 59 is turned off, the counter 99 outputs the preset data from the generation circuit 98.
51 degrees is preset, and its contents become "51 degrees."

Next, the controller 91 switches the changeover switch 86 to terminal C.
(Step 5Oa).

In this state, the output of the recording presence/absence detection circuit is checked (step 5O9), and if it is not high, the latch circuit 100 is activated to latch the output of the counter 99 (step S10). A step reversal is commanded (step 5ll). Thereafter, this operation is repeated until the output of the detection circuit 85 becomes high or the head 5 reaches the fifth track position and the carrier detector 58 is turned off (step 512).

The recording presence/absence detection circuit 85 detects the presence or absence of a recording signal on the disk 2 based on the signal picked up by the head 5, and outputs a high signal if the signal is present, and a low signal if the signal is absent. Output a signal. Also, at this time, the counter 99 counts down by one every time the step motor 49 reverses one step.

Now, in the above operation, in step S09, the detection circuit 85
When the output becomes high, the system controller 91 instructs the motor 49 to continuously reverse rotation (step S
During this time, it is checked whether the carrier position detector 58 is turned off or not (Step 514), and when it is turned off, the motor 49 is commanded to stop (Step 5).
15). As a result, the head 5 is set to the 0th track side position, and at this time, the counter 99 is cleared and its contents become OI+. On the other hand, at this time, the data of the number of the track (unrecorded) next to the last recorded track is left in the latch circuit 100 when viewed from the outer circumferential side of the disk 2, that is, from the 0th track side. .

After stopping the motor 49 in step S15, the controller 91 moves to the next step S16 and instructs the motor 49 to reverse by several track pitches (hereinafter referred to as TP). Detector 58 at
If it is turned off, the process moves to step 516 without going through steps SL3 to SL5S15. In this case, the content to the latch circuit lOO is "1". Of course, in this case as well, the counter 99 is cleared and its content is "0". Further, if the 50th track has been recorded, step SO9→SIO→S
ll 4512→SO9, step S1
3, the contents of latch 100 at this time are °“
51".

Now, in step S16, the controller 91 instructs the drive circuit 87 to reverse the motor 49 in steps in order to move the head 5 in the direction opposite to the arrow X by several TP.

As a result, the reset lever 73 shown in FIG. 5 rotates the switch operating lever 62 counterclockwise in the figure to detach its arm 62c from the push-down part 66c of the cassette loading/unloading detection lever 66, thereby causing the cassette to be loaded. While the detachment detection switch 70 is turned back on, the operation lever 62 is returned to a neutral state in which its arm portion 62c can collide with the falling portion 66c of the detection lever 66 due to the action of the spring 63. Therefore, even if the operating lever 62 is no longer pressed by the reset lever 73, it abuts against the falling portion 66G of the detection lever 66 and does not have any effect on the switch 70.

Then, the controller 91 controls the step motor 49 by a number T.
After rotating the motor 49 in the opposite direction by P minutes, the motor 49 is commanded to rotate continuously in the normal direction to move the head 5 in the direction of the arrow X (step S17).
=B output (step 518), where:
As the stepper motor 49 rotates forward, the counter 99 counts up one by one from its content "0°'.
Its contents always indicate the position of the head 5 on the disk 2, that is, the recording track signal, and the comparator circuit 10
1 makes the A=B output high when the opposing track number of the head 5 matches the contents of the latch circuit 100. Therefore, the controller 91 controls the comparison circuit 101 in step S18.
When the A=B output of the motor becomes high, motor 4 responds to this.
9 is commanded to stop (Step 519), the head 5 is thereby positioned at the track position held by the latch circuit 100, that is, the track (unrecorded) next to the last recorded track as seen from the O-th track. That means that.

Next, the controller 91 instructs the disk motor 88 to stop (step 520), and then checks whether the carrier position detector 59 is off (step 521). If not, the display 92 indicates that recording is not possible. That it will be possible (or that preparations for recording have been completed)
.

display (step 522), and if it is off, the display 9
2 to display that the recording of the 50th track of disc 2 has ended (disc end) (step 23).
, prohibits recording (step 524).

On the other hand, in the previous step S03, if the cassette loading/unloading detection switch 70 is not turned on, the cassette 1 is replaced (
′! A) was not carried out, or
is not loaded, the controller 91
In addition, check whether the cassette presence/absence detection switch 69 is on or not (step 525). If it is on, that is, if the cassette l is loaded, proceed to the previous step 5.
Move to 21. On the other hand, if the detection switch 69 is not turned on, this means that the cassette 1 is not loaded (no cassette).
The controller 91 causes the display 92 to indicate this (step 526), and prohibits recording (step 5).
22).

In this embodiment, the *i operation for recording is performed as described above.

Next, the recording operation of the video signal by turning on the recording trigger switch 95 after the preparation operation for recording is completed as described above will be explained with reference to FIG.

When the preparatory operation for recording is completed as described above, the controller 91 checks whether the recording trigger switch 95 has been turned on by pressing down the trigger button 96 in the second stage, unless the power is turned off. This will be repeated (step 531). When the trigger switch 95 is turned on, the controller 91 switches the changeover switch 86 to the terminal R side (step 532), and then operates the camera section 81 and the synchronization signal generation circuit 84, and also operates the rotation of the disk motor 88. A command is issued to the motor control circuit 89 (step 533), whereby the camera section 81 receives the synchronization signal H from the synchronization signal generation circuit 84.
Now outputs a video signal synchronized with S and VS,
The recording circuit 82 then processes the video signal from the camera unit 81 as a recording signal (FM modulation, etc.)
Of course, in this state, the recording gate in the recording circuit 82 is off, so the changeover switch 8 is not connected to the recording circuit 82.
6 is connected to the head 5, but no recording is performed).Meanwhile, the motor control circuit 89 receives the speed signal FG from the motor 88, the rotational phase signal PG from the rotational phase detector 90, Further, based on the vertical synchronizing signal vS from the synchronizing signal generating circuit 84, the motor 88 is activated so that the disc 2 is moved at a speed corresponding to the field or frame frequency and at a predetermined phase with respect to the vertical synchronizing signal S. When the rotation is controlled and the motor 88 starts to rotate at the specified speed and phase, the servo lock-in signal SL is activated.
get high. Here, the controller 91 is the motor 88
After commanding the operation, it is repeatedly checked whether the servo lock-in signal SL from the control circuit 89 has become high (step 534), and when the servo φ lock-in signal SL has become high, it is immediately A recording trigger is given to the recording control circuit 83 (step 535). As a result, the recording control circuit 83 uses the synchronizing signals HS and VS from the synchronizing signal generating circuit 84 to control the recording circuit for l field or l frame period including the first vertical synchronizing signal vS immediately after this recording trie is given. Turn on the 82 recording gate.

As a result, a recording signal for 1 field or 1 frame is applied to the head 5 through the changeover switch 86, and is recorded on the disk 2 rotated by the motor 88 in exactly one revolution. Of course, in this case, the recording position of the vertical synchronizing signal vS is a predetermined rotational position with respect to the magnetic pin 3e of the center core 3.

The recording control circuit 83 records one field or one
After one frame's worth of recording is completed, the recording end signal RE is made high. On the other hand, after the recording trigger, the controller 91 repeatedly checks whether the recording end signal RE has become high (step 536).
When this becomes high, the motor drive circuit 87 is commanded to rotate the step motor 49 forward in steps in order to move the head 5 to the next recording position, that is, by ITP in the direction of the arrow X (step 537). hour counter 99
counts up by one 6 then controller 9
Step 1 checks whether the mode changeover switch 97 is turned on (step 53B), and if it is not turned on (that is, this indicates that the single-shot mode is designated), the camera section 81 and the synchronization signal The operation of the generation circuit 84 is stopped, and the motor control circuit 89 is commanded to stop the disk motor 88 (step 539).

Thereafter, the controller 91 checks whether the detector 59 has turned off due to the movement of the head 5 (step 540), and if it has turned off, causes the display 92 to indicate the end of the disc (step 540). 341), and subsequent recording is prohibited (step 542).

Hereinafter, when the switch 97 is off, that is, the single-shot mode is designated, and unless the detector 59 is turned off, each time the recording trigger switch 95 is turned on, the above-mentioned operation will cause the image to be placed at a different position on the disc 2. The signal for one field or one frame is now recorded.

On the other hand, if the mode changeover switch 97 is on in step 338 (that is, this indicates that the continuous shooting mode is designated), the controller 91 has not yet activated the trigger e switch 97 at this point. Check whether the detector 59 is turned on (step 543), and if it is not turned on, proceed to the previous step S39, but if it is turned on, check whether the detector 59 is turned off or not (step 543). 544), if not turned off, a predetermined time Δ for determining the speed or rate for continuous recording.
The process waits for t to elapse (step 545), and then returns to the previous step S35 to trigger recording again. If the detector 59 is off in step S44, the controller 91 stops the operation of the camera unit 81 and the synchronization signal generator 84 and commands the motor 88 to stop, as in step S39 (step 546). After that, the process moves to step 341.

When the switch 97 is on, that is, when the snapshot mode is designated, as long as the recording trigger switch 95 is on, the above-mentioned operation records the differences on the disk z at a predetermined speed until the detector 59 turns off. A video signal for one field or 17 frames is continuously recorded at the position.

Incidentally, the speed or rate of quick shooting in this case is determined in step S45.
It can be changed arbitrarily by making the waiting time Δt variable.

In addition, in this recording operation, a counter 99 is counted up each time the head 5 moves to the next track after completing one track recording, and its contents indicate the current position of the head 5. Therefore, the counter 99
This output can be applied to the display 92 to display the initial position of the head 5.

As described above, in this embodiment, when the cassette loading/unloading detection switch 70 is turned on due to cassette conversion (loading/unloading), a search is made to see if there is any recording on the disc, and the recording is performed. After the possible positions are stored in the latch circuit 100, the mechanical storage means shown in FIG. Since power is supplied, it is possible to satisfactorily solve the problem of inability to reset the head 5 due to a power supply trouble when resetting the mechanical storage means before searching for a recordable position.

Furthermore, in this embodiment, the head 5 is
When positioning the tracks to the recording position on the disk 2, start from the last recording position on the disk z, that is, the 50th track position, and start in the reverse order of the specified order of the tracks at the time of recording, that is, the order of the recording tracks. The presence or absence of recording is checked at each recording position in the reverse order of the numbering order, and the ITP of the position where it is determined that there is recording is counted first, in the order of the number of the recording track. The latch circuit 100 memorizes the unrecorded position immediately after the last recorded track, and the head 5 is positioned at this position. Even in the case where the head 5 is erased, the head 5 is not positioned with respect to this erased track. When moving the camera to the next recording position, there are inconveniences such as having to determine whether or not there is recording at each moving position, and it takes time until the next recording is possible, resulting in lost recording opportunities. This eliminates the problem of inconveniences such as inconveniences such as being lost or not being able to perform continuous recording properly.

[In the modified example]

One embodiment of the present invention has been described above, but first, a modification of the above embodiment will be explained.

In addition to the above-mentioned modification, the storage means shown in FIG.
Instead of detecting the cassette 1 in the holder 31, the cassette 1 may be configured to detect the attachment or detachment of the cassette 1 by detecting the opening of the holder 31 or the outer cover 35 (i.e., the state shown in FIG. 3A). . In the former case, the opening 31g of the holder 31 may be closed so that the sensing layer 66a of the lever 66 senses the layer surface of the halter 31, and in the latter case, the sensing layer 66a may be configured as an outer cover. 35 or hook 40 (FIG. 2). However, in either case, the function of the cassette presence/absence detection switch 69 will be impaired, so the switch 69 is detected and made independent from the lever 66, and it is changed to a normally open type switch, and the upper contact piece is (corresponding to 69b) is fixed with a detection pin, etc., so that it can enter into the holder 31 through the opening provided on the top plate of the chassis 11 and the bottom surface of the holder 31, and the holder 31 and the outer cover 35 are closed. Only when the cassette 1 is inserted into the holder 31 in the state where the bottle is pushed and the contact pieces (69b-69a
) may be configured so that they are turned on when they come into contact with each other.

Incidentally, in this case, the system controller 91 may be equipped with the following control function as the recording rate/preparation operation control function. Namely, in step S03 of FIG. 8, the cassette loading/unloading detection switch 70 is turned on. The check to see if the cassette presence/absence detection switch 69 is turned on in step S25, which would have been performed if not, may be performed between the check to turn on the outer cover ψ lock completion detection switch 74 in step SO2 and step SO3. Other details are the same as in FIG.

The above example shows a case in which the search for recording presence/absence of disc 2 is performed in descending order (incremental) starting from the 51st track side, but this also applies if the search is performed in ascending order (incremental) starting from the 5th track side. It's good. In this case, the system controller 91 is configured to perform control functions according to the operational flow shown in FIG.

Note that in FIG. 10, steps with the same reference numerals as in FIG. 8 indicate steps with the same content, and steps with a dash indicate corresponding steps.

In FIG. 10, after commanding the rotation of the disk motor 88 in step SO4, the controller 91 controls the step motor 49 until the carrier position detector 58 turns it off.
The head 5 is continuously reversed and the motor 49 is stopped when the detector 58 turns off (steps 505' to 507), thereby setting the head 5 to the O-th track. Next, the controller 91 switches the switch 86 to the C side (step 5).
After 08), the output of the recording presence/absence detection circuit 85 is checked in step 509).

If this is low, it is direct, and if it is high, it is the latch circuit lO
After latching the output of the counter 99 (step S10), the motor 49 is rotated forward by ITP (step S10).
Step 5ti).

This operation is repeated until the head 5 reaches the 51st track and the carrier detector 59 is turned off (step S12'). Thus, when the head 5 reaches the 51st track, the final recording track number remains in the latch circuit lOO.

Now, when the detector 59 turns off, the controller 91 further rotates the motor 49 in the forward direction by several TP. This is an operation to reset the mechanical storage means shown in FIG. The gear 71 in Fig. 6 rotates counterclockwise in Fig. 5 (clockwise in Fig. 6) due to the normal rotation of the motor 49 (movement of the carrier 46 in the direction of arrow X), and the reverse rotation of the motor 49 (movement of the carrier 46 in the Move the arrow X in the opposite direction) to move the fifth
In the figure, the reset lever 73 is rotated clockwise (counterclockwise in Figure 6), and the reset lever 73 resets the lever 62 by further moving from the 51st track of the head 5 toward the center of the disk (in the direction of the arrow X). It is configured.

Next, the controller 91 commands continuous reversal of the step 7'-motor 49 (step 17'), and during this time,
Check the A=B output of the comparison circuit 101 in step 5.
18), when this becomes high, the motor 49 is stopped (step 519). At this time. Head 5 is now at the last recorded track position on disk 2,
Therefore, the controller 91 is further instructed to rotate the motor 49 forward in steps corresponding to the ITP (step 527), and the head 5 is thus set at the unrecorded position immediately after this last recorded track. Hereinafter, the operations after step S20 are the same as in the case of FIG.

In the above embodiments and modifications, the recording track numbers on the disk 2 are sequentially numbered from the outer circumference of the disk to the center, but the numbering may also be done conversely from the center of the disk to the outer circumference. 8th to 10th accordingly
The operational flow shown in the figure has been slightly modified.

Furthermore, although an example of a still video recording device with an integrated camera section has been shown above, the camera section 81 may of course be separate, and the recording device may also be powered by a battery. In addition to the model, it may be configured to use a commercial power source.

Further, the device is not limited to a video signal recording device, but may be one that records information such as audio signals or data, and the recording method is not limited to magnetic recording. Further, the record carrier may be in the form of a disk, an outer drum, or a tape (for example, in an 8-track audio recorder).

〔Effect of the invention〕

As described in detail above, according to the present invention, as a recording device capable of changing record carriers, even if the record carrier is replaced while the power is cut off, this can be reliably detected and the corresponding response can be taken. Moreover, when resetting the recording means, fail-safe measures are used as much as possible against power supply problems, improving safety and making it possible to always reset the recording means in a good manner. It is extremely useful in sterilization equipment.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a holder such as a record carrier used in an embodiment of the present invention and a drive unit on the apparatus side, and FIG. 2 is a perspective view showing an embodiment of the present invention, particularly cassette loading and FIG. 3 is an exploded perspective view of the disc mounting mechanism. 3A, 3B, and 3C are sectional views taken along the line AA in FIG. 2, showing various states of the second illustrated mechanism. FIG. 4A, FIG. 4B, and FIG. 4C are plan views showing details of the cover/lock portion in each state in the second illustrated mechanism. FIG. 5 shows an embodiment of the present invention, in particular, cassette replacement (
FIG. 6 is a perspective view of a mechanism for detecting and memorizing (mounting/detaching) as seen diagonally from below, and FIG. 6 is a plan view of an embodiment of the present invention, particularly a head moving mechanism. FIG. 7 is a block diagram showing the configuration of an electric circuit system according to an embodiment of the present invention. FIG. 8 is a flowchart showing the control flow of the recording preparation operation of the system controller in FIG. 7. FIG. 9 is a flowchart showing the control flow of the recording operation of the system controller. FIG. 10 is a flowchart showing the control flow of the recording maintenance operation of the system controller in a modification of the above embodiment. 1 ---1 magnetic disk cassette, 2-111 magnetic disk, 5 ---1 magnetic head, 6-111 disk rotation spindle, 11 ---1 main body chassis, 21.23 ---1 Lock cover, 31--1 cassette holder, 35-1--outer cover. 46---Head carrier, 49---Step motor, 54---Screw, 58.59---Carrier position detector, 62------
Switch operation lever, 6-row cassette loading/unloading detection lever, 69---1 cassette presence/absence detection switch, 70---1 cassette loading/unloading detection switch. 71---Gear, 73-11-Reset lever, 74
---Ichigai Copper lock completion detection switch, 81--m
-Camera section, 82--1 recording circuit. 83---1 recording control circuit, 85---1 recording presence/absence detection circuit. 86----changeover switch. 88---Disc rotation motor, 91---System controller, 92----Display unit, 93----Power supply circuit, 93'----Back
up power circuit. 94---1 power switch, 95---1 recording trigger contest switch, 97---mode changeover switch, 99---1 counter. 100---Latch circuit, 101---One comparison circuit.

Claims (1)

[Scope of Claim] A recording device capable of replacing record carriers, comprising a search means for searching for the presence or absence of recording at each recording position on the loaded record carrier, and electronically processing the search results. an electrical storage means supplied with power from an auxiliary power supply circuit for storing data on the record carrier; and a mechanical storage means for mechanically storing that the record carrier has been removed or newly loaded; A memory characterized by comprising a control means for controlling the retrieval means according to a storage state of the means, and a reset means for resetting the mechanical storage means after the completion of storage by the electric storage means. Device.